26668387 has 2 divisors, whose sum is σ = 26668388. Its totient is φ = 26668386.

The previous prime is 26668373. The next prime is 26668399. The reversal of 26668387 is 78386662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26668387 is a prime.

It is a super-2 number, since 2×26668387² = 1422405730363538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26668357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13334193 + 13334194.

It is an arithmetic number, because the mean of its divisors is an integer number (13334194).

Almost surely, 2^26668387 is an apocalyptic number.

26668387 is a deficient number, since it is larger than the sum of its proper divisors (1).

26668387 is an equidigital number, since it uses as much as digits as its factorization.

26668387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 26668387 is about 5164.1443628156. The cubic root of 26668387 is about 298.7667408906.

The spelling of 26668387 in words is "twenty-six million, six hundred sixty-eight thousand, three hundred eighty-seven".